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Verdite and Sinhalite Optical Properties


Sinhalite and Verdite Optical Properties


Optical Properties

Luster
Vitreous, Silky   
Not Available   

Pleochroism
Extreme   
Trichroism: green light brown dark brownHerve Nicolas Lazzarelli   

Dispersion
Not Available   
0.02   
21

Transparency
Translucent   
Gemmological Tables (2004) More from other references   

Refractive Index
1.580   
1.665-1.712   

Optic Character
Not Available   
Not Available   

Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c   
Orthorhombic   

Birefringence
Not Available   
0.036-0.042   

Clarity
Translucent   
TransparentUlrich Henn and Claudio C. Milisenda   

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Verdite and Sinhalite Optic Character

Verdite and Sinhalite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Verdite and Sinhalite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Verdite and Sinhalite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

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Verdite and Sinhalite Transparency

Similar to their colors, Verdite and Sinhalite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Verdite is Translucent while Verdite is Translucent in appearance.

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